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| 型号： | LTC3707IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/32页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 28-SSOP |
| 标准包装： | 2,500 |
| 系列： | PolyPhase® |
| PWM 型： | 电流模式 |
| 输出数： | 2 |
| 频率 - 最大： | 360kHz |
| 占空比： | 99.4% |
| 电源电压： | 4.5 V ~ 28 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
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ELECTRICAL CHARACTERISTICS 25°C. V l denotes the speci? = 5V unless otherwise noted. full operating
LTC3707
cations which apply over the
temperature range, A IN RUN/SS1, 2
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
f HIGH
I FREQSET
Highest Frequency
FREQSET Input Current
V FREQSET = 2.4V
V FREQSET = 0V
280
310
–2
360
–1
kHz
μA
3.3V Linear Regulator
V 3.3OUT
V 3.3IL
V 3.3VL
3.3V Regulator Output Voltage
3.3V Regulator Load Regulation
3.3V Regulator Line Regulation
No Load
I 3.3 = 0 to 10mA
6V < V IN < 30V
l
3.20
3.35
0.5
0.05
3.45
2
0.2
V
%
%
PGOOD Output
V PGL
I PGOOD
PGOOD Voltage Low
PGOOD Leakage Current
I PGOOD = 2mA
V PGOOD = 5V
0.1
0.3
1
V
μA
V PG
PGOOD Trip Level, Either Controller
V OSENSE Respect to Set Output Voltage
V OSENSE Ramping Negative
V OSENSE Ramping Positive
–6
6
–7.5
7.5
–9.5
9.5
%
%
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3707E is guaranteed to meet performance speci?cations
from 0°C to 85°C. Speci?cations over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC3707I is guaranteed to meet
performance speci?cations over the full – 40°C to 85°C operating
temperature range.
Note 3: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC3707EGN = T J = T A + (P D ? 85°C/W)
Note 4: The LTC3707 is tested in a feedback loop that servos V ITH1, 2 to a
speci?ed voltage and measures the resultant V OSENSE1, 2.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7: The IC minimum on-time is tested under an ideal condition
without external power FETs. It can be different when the IC is working in
an actual circuit. See Minimum On-Time Considerations in the Application
Information section.
Note 8: V FREQSET pin internally tied to a 1.19V reference through a
large resistance.
TYPICAL PERFORMANCE CHARACTERISTICS
Ef?ciency vs Output Current
and Mode (Figure 13)
Ef?ciency vs Output Current
(Figure 13)
Ef?ciency vs Input Voltage
(Figure 13)
100
Burst Mode
90 OPERATION
80
100
90
V IN = 15V
V OUT = 5V
V IN = 7V
100
90
70
60
FORCED
CONTINUOUS
MODE (PWM)
80
V IN = 10V
V IN = 15V
80
50
V IN = 20V
40
30
20
CONSTANT
FREQUENCY
(BURST DISABLE)
70
60
70
60
10
0
0.001
0.01
0.1
1
V IN = 15V
V OUT = 5V
10
50
0.001
0.01
0.1
1
10
50
5
V OUT = 5V
I OUT = 3A
15
25
30
OUTPUT CURRENT (A)
3707 G01
OUTPUT CURRENT (A)
3707 G02
INPUT VOLTAGE (V)
3707 G03
3707fb
4
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相关代理商/技术参数 |
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| LTC3708EUH | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LTC3708EUH#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC3708EUH#TR | 功能描述:IC REG CTRLR BUCK PWM CM 32-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
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| LTC3708EUHPBF | 制造商:Linear Technology 功能描述:LTC3708 dual SD tracking PS controller |
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